Abstract: An apparatus for mixing the content of a closed package, such as a paint can. The apparatus comprises a frame and a substantially vertically oriented package holder which is movably mounted in the frame. The package holder includes a device for releasably clamping a package so that the axis of the package is parallel with the axis of the holder. The apparatus also includes a device for driving the holder in a closed movement path relative to the frame. The drive device comprises a rotatable shaft which is substantially vertically oriented and which is mounted centrally on the frame. The drive shaft carries a crank having a substantially vertical pin. The pin is centrally connected to the lower portion of the holder and is journalled at one of its ends into a rolling bearing. Stabilizing devices connect the holder and the frame and are arranged to prevent relative rotation between the holder and the frame around the drive shaft axis.

Abstract: There is provided a mixing apparatus wherein liquid or pulverous material is mixed by shaking a can containing the material to be mixed. An inner frame of the apparatus is provided with a table for the can and a means for clamping the can to the table. The inner frame is arranged for vibration relative to an outer frame. An electric motor is mounted on the outer frame and drives by way of a transmission system the clamping means, which comprises a screw/nut assembly. Two parallel links couple the inner frame to the outer frame and the motor power is transferred.A pulley/belt assembly transfers the motor power to that part of the transmission system which is mounted on the inner frame. The pulleys of this assembly are substantially coaxial with the pivot axes of the links.A remote control system is provided for automatic sequential and controlled operation of the apparatus functions during a mixing cycle, i.e. clamping shaking and releasing a can.